/* ============================================================
   David & Sarah — Wedding RSVP
   Theme: light lilac purple + dark green
   ============================================================ */

:root {
  /* Lilac */
  --lilac-50: #f6f2fb;
  --lilac-100: #efe7f8;
  --lilac-200: #e0d0f0;
  --lilac-300: #c9aee4;
  --lilac-400: #b497d6;
  --lilac-500: #9d78c6;

  /* Dark green */
  --green-900: #14291f;
  --green-800: #1b3a2b;
  --green-700: #234a37;
  --green-600: #2e5d45;
  --green-500: #3c7657;

  /* Neutrals */
  --ink: #22201f;
  --cream: #fbf9f5;
  --white: #ffffff;
  --muted: #6c6a72;
  --line: rgba(27, 58, 43, 0.14);

  --shadow-sm: 0 2px 10px rgba(27, 58, 43, 0.08);
  --shadow-md: 0 14px 40px rgba(27, 58, 43, 0.14);

  --font-serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-sans: "Jost", "Segoe UI", system-ui, sans-serif;

  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

sup { font-size: 0.55em; }

/* ---------------- Nav ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem clamp(1rem, 4vw, 3rem);
  background: rgba(251, 249, 245, 0.82);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav__brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--green-800);
  text-decoration: none;
}
.nav__links {
  display: flex;
  gap: clamp(1rem, 3vw, 2.4rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a {
  color: var(--green-700);
  text-decoration: none;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  transition: color 0.2s ease;
}
.nav__links a:hover { color: var(--lilac-500); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 58px);
  padding: 4rem 1.25rem;
  text-align: center;
  background:
    radial-gradient(1200px 600px at 50% -10%, var(--lilac-100), transparent 60%),
    linear-gradient(160deg, var(--lilac-50) 0%, var(--cream) 45%, #eef4ef 100%);
  overflow: hidden;
}
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(6px);
  opacity: 0.5;
  pointer-events: none;
}
.hero::before {
  width: 320px; height: 320px;
  left: -120px; top: -80px;
  background: radial-gradient(circle, var(--lilac-200), transparent 70%);
}
.hero::after {
  width: 380px; height: 380px;
  right: -140px; bottom: -120px;
  background: radial-gradient(circle, rgba(46, 93, 69, 0.28), transparent 70%);
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  animation: rise 0.9s ease both;
}
.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.32em;
  font-size: 0.72rem;
  color: var(--green-600);
  margin: 0 0 1.4rem;
}
.hero__monogram {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  color: var(--lilac-500);
  letter-spacing: 0.16em;
  margin-bottom: 0.4rem;
}
.hero__names {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--green-800);
  margin: 0.4rem 0 1rem;
  line-height: 1.05;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: clamp(2.4rem, 8vw, 5rem);
}
.hero__amp {
  color: var(--lilac-400);
  font-style: italic;
  font-size: 0.7em;
}
.hero__invite {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  color: var(--muted);
  margin: 0.2rem 0 2rem;
}
.hero__date {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  padding: 1rem 2.2rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.hero__day,
.hero__year {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.8rem;
  color: var(--green-600);
}
.hero__bigdate {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  color: var(--green-800);
  font-weight: 600;
}

/* Countdown */
.countdown {
  display: flex;
  justify-content: center;
  gap: clamp(0.6rem, 3vw, 1.6rem);
  margin: 2.2rem 0;
}
.countdown__unit {
  min-width: 64px;
  padding: 0.7rem 0.4rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}
.countdown__unit span {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--lilac-500);
  line-height: 1;
}
.countdown__unit small {
  display: block;
  margin-top: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.6rem;
  color: var(--muted);
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-block;
  cursor: pointer;
  border: none;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.8rem;
  padding: 0.95rem 2.4rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn--hero {
  margin-top: 0.5rem;
  background: var(--green-700);
  color: var(--white);
  box-shadow: var(--shadow-md);
}
.btn--hero:hover { transform: translateY(-2px); background: var(--green-600); }
.btn--submit {
  width: 100%;
  margin-top: 0.5rem;
  background: var(--lilac-500);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}
.btn--submit:hover { transform: translateY(-2px); background: var(--lilac-400); }
.btn--submit:disabled { opacity: 0.6; cursor: progress; transform: none; }

/* ---------------- Section headings ---------------- */
.section-title {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--green-800);
  text-align: center;
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 0.4rem;
}
.section-sub {
  text-align: center;
  color: var(--muted);
  margin: 0 auto 2.6rem;
  max-width: 46ch;
}

/* ---------------- Details ---------------- */
.details {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6rem) 1.25rem;
}
.details__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.4rem;
}
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 2.2rem 1.6rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card__icon { font-size: 1.8rem; margin-bottom: 0.6rem; }
.card h3 {
  font-family: var(--font-serif);
  color: var(--lilac-500);
  font-size: 1.5rem;
  margin: 0 0 0.6rem;
  letter-spacing: 0.02em;
}
.card p { margin: 0; color: var(--ink); }

/* ---------------- RSVP ---------------- */
.rsvp {
  padding: clamp(3.5rem, 8vw, 6rem) 1.25rem;
  background:
    radial-gradient(900px 500px at 100% 0%, var(--lilac-100), transparent 55%),
    linear-gradient(180deg, #eef4ef 0%, var(--cream) 100%);
}
.rsvp__panel {
  max-width: 620px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(1.8rem, 5vw, 3rem);
  box-shadow: var(--shadow-md);
}

/* Form */
.form { display: flex; flex-direction: column; gap: 1.25rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label,
.field legend {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--green-700);
  font-weight: 500;
}
.field .muted { color: var(--muted); text-transform: none; letter-spacing: 0; }
.req { color: var(--lilac-500); margin-left: 0.15rem; }

input[type="text"],
input[type="email"],
select,
textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink);
  background: var(--lilac-50);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem 0.95rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
input:focus,
select:focus,
textarea:focus {
  outline: none;
  background: var(--white);
  border-color: var(--lilac-400);
  box-shadow: 0 0 0 3px rgba(180, 151, 214, 0.25);
}

.field--radio { border: none; margin: 0; padding: 0; }
.field--radio legend { margin-bottom: 0.6rem; }
.radio {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 0.95rem;
  margin-bottom: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.98rem;
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.radio:hover { border-color: var(--lilac-300); }
.radio input { accent-color: var(--green-600); width: 1.05rem; height: 1.05rem; }
.radio:has(input:checked) {
  background: var(--lilac-50);
  border-color: var(--lilac-400);
}

.field--inline { max-width: 220px; }
.guests__hint {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0.4rem 0 0.2rem;
}

/* Guest rows */
.guests { display: flex; flex-direction: column; gap: 1rem; }
.guest {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.1rem 1.1rem 1.2rem;
  background: var(--lilac-50);
}
.guest__title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--green-700);
  margin: 0 0 0.8rem;
}
.guest .field { gap: 0.35rem; }
.guest .field + .field { margin-top: 0.75rem; }

/* Entrée radio cards */
.field__label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--green-700);
  font-weight: 500;
}
.entrees { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 0.1rem; }
.entree {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  background: var(--white);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.entree:hover { border-color: var(--lilac-300); }
.entree input {
  accent-color: var(--green-600);
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.15rem;
  flex: none;
}
.entree:has(input:checked) { background: var(--lilac-50); border-color: var(--lilac-400); }
.entree__text { display: flex; flex-direction: column; gap: 0.1rem; }
.entree__name { font-size: 0.98rem; color: var(--ink); }
.entree__desc { font-size: 0.78rem; color: var(--muted); line-height: 1.35; }

.declining-note {
  background: var(--lilac-50);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.2rem;
  color: var(--green-700);
}
.declining-note p { margin: 0; }

.form__status {
  text-align: center;
  min-height: 1.2rem;
  margin: 0;
  font-size: 0.92rem;
}
.form__status.is-error { color: #b23a48; }

/* Thank you */
.thank-you { text-align: center; padding: 1rem 0; animation: rise 0.5s ease both; }
.thank-you__mark {
  font-size: 3rem;
  color: var(--lilac-400);
  margin-bottom: 0.4rem;
}
.thank-you h3 {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--green-800);
  margin: 0 0 0.4rem;
}
.thank-you p { color: var(--muted); margin: 0; }

/* ---------------- Footer ---------------- */
.footer {
  text-align: center;
  padding: 3rem 1.25rem;
  background: var(--green-800);
  color: var(--lilac-100);
}
.footer__monogram {
  font-family: var(--font-serif);
  font-size: 2rem;
  letter-spacing: 0.16em;
  color: var(--lilac-300);
  margin-bottom: 0.4rem;
}
.footer p { margin: 0.15rem 0; font-family: var(--font-serif); font-size: 1.2rem; }
.footer__small {
  font-family: var(--font-sans) !important;
  font-size: 0.75rem !important;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: rgba(239, 231, 248, 0.6);
  margin-top: 0.8rem;
}

/* ---------------- Motion ---------------- */
@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
}